<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="https://cdn.jsdelivr.net/npm/vue@2.6.10/dist/vue.js"></script>
</head>

<body>
    <div id="app">
        <button @click="type=1">西瓜</button>
        <button @click="type=2">葡萄</button>
        <button @click="type=3">榴莲</button>
        <!-- v-show不支持使用template:
        - 可以自己嵌套一层结构
        - 给每一个元素都添加v-show -->
        <div v-show="type===1">西瓜 <input type="text"></div>
        <div v-show="type===2">葡萄 <input type="text"></div>
        <div v-show="type===3">榴莲 <input type="text"></div>
    </div>
    <script>
        Vue.config.productionTip = false;

        const vm = new Vue({
            el: "#app",
            data() {
                return {
                    type: 1,
                }
            }
        })
    </script>
</body>

</html>